Adjustable lamp



FIG. 1 is a top perspective view of an adjustable lamp showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top perspective view of a second embodiment of my new design;

FIG. 8 is a bottom perspective view thereof;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a top plan view thereof;

FIG. 11 is a bottom plan view thereof;

FIG. 12 is a left side elevational view thereof, the right side being a mirror image. 

The ornamental design for an adjustable lamp, as shown and described. 